Internal-combustion engine.



Patented Feb. 7, 1911.

T. TURNBULL, JR. A INTERNAL COMBUSTION ENGINE. APPLIOATION FILED MAY 11, 1909.

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THOMAS TURNBULE, E", (3F PIT'ESBURG, PENNSYLVANIA.

INTE'BNAL-COMBUSEFION ENGINE.

assess.

Specification of Letters Patent.

Patented sea. a, 1911.

Jr, of Pittsburg, in the county of Allegheny and State 'of Pennsylvania, have invented certain new and useful Improvements in internal-Combustion Engines, of which the following is a specification.

My invention relates to improvements in internal combustion engines, and more particularly to improvements in double acting internal engines of either the two or tour cycle type.

An object of the present invention is to provide new and improved means for cooling, by means of a fluid, the piston and piston-rod of engines of this class.

A further object of the present invention is to provide a new and improved cross-head construction.

In the accompanying drawing, which illustrates applications of my invention, Figure 1, is a central vertical sectional view of a double acting four cycle engine embodying my invention; Fig. 2, a similar view of a double acting two cycle engine embodying my invention; and Fig. 3, an elevational View of the cross-head.

As illustrated and as preferred both types of engines comprise abase 1, on which is mounted a casting 2. Casting 2 comprises a crankcase 3 and a cross head slide 4. Cross-head slide 4. is in the form of an open ended cylinder and is designed to contain a cylindrical and ported cross-head Cross-head 5 constitutes an important and characteristic feature of my invention and as illustrated comprises a fluid-receivingchamber 6 and a fluid-discharge chamber 7..

Chamber 6 is in open communication with an inlet port 8 through which a coollng flu1d enters the chamber and it 1s also 1n communication with "an outlet port- 9. Fluid-discharge-chamber 7 is in communication with an inlet port 10 and with a discharge port 11. The inlet port of chamber 7 .is of the same size as the outlet port 9 of chamber 6 and the outlet port of chamber 7 corresponds in size and shape with the inlet port of chamber 6.

The cross-head is formed at its upper end with annular recesses to receive packingrings 12 and at its lower end with similar recesses for packing-rings 13. Cross'head 5 is connected with crank lt by means of connecting-rod 15 and a pin 1.6. lhn 16 is passed through openings formed in the wall of the cross-head and after the pin is in position. the packing-"rings 13 partly cover said openings and aid in maintaining the pin 16 in the desired position.

1'7 designates the cylinder of the engine which is designed to be water cooled as well as its heads 18 and 19.

Within the cylinder is a pistoxi or pistonhead 20 formed with a chamber 21 and said piston is connected with the cross-head by means of a hollow piston-rod 22. Located within the piston-rod 22 and extending up wardly from the cross-head to the piston and projecting into the chamber 21 thereof 1' employ a tube or pipe 23, the latter being preferably provided at its upper end with a flange 24. k

The lower end of piston-rod 22 is in communication with the fluid-receivingchamber of the cross-head by means of port 9 therebypermitting afluid to be passe from the reeei'ving-chamber 6 up the rod and into the" chamber 21 of the piston-head.

Inner tube23 is in communication with the fluid-discharge-chamber of the crosshead by means of port 10, thusallowing the cooling fluid to pass from chamber. 21 of the piston-head into chamber 7 of the cross-' head.

The fluid for cooling the parts is supplied through a pipe 25 which registers with the inlet port 8 of the cylindrical cross-head and the coolin fluid is discharged from the chamber 7 y way of a pipe 26.

By the means described I provide a sini ple and efficient cooling system for the pis ton and piston-rod of engines of the classes described.

In the construction of atwo cycledoub'le outlet passage, a fluid supply-pipe in constant communication with the receivingchamber, a fluid discharge chamber on the opposite side of the cross-head, having an inlet and an outlet'passage. a fluid discharge-pipe in constant communication with the discharge chamber, means coiiperating with the fluid supply-pipe and the fluid dischamber on one side, havin charge-pipe for efi'ectingacontinuous flow of discharge-chamber, means cooperating with 20 i said pipes for effecting a continuous flow of a a cooling fluid from the fluid receiving chamber to the fluid dischargechamber through the piston and piston-rod, comprising a chambered piston, a hollow piston rod connectin the receivin" chamber of the cross-hes. and a tube connecting the, chambered piston and the discharge chamber of the cross-head.

2. In an internal combustion engine, a

cylindrical cross-head slide, a cylindrical cross-head formed with a fluid receiving an inlet port and an outlet port, a fluid ischarge chamber on the opposite side of the cross-head, having an inlet and an outlet port, a pipe in constant communication with the inlet port of the receiving-chamber, a pipe in constant communication with the outlet port of the and the cham' er of the piston,

cooling fluid from the fluid receiving chamber to the fluid discharge chamber through the piston and piston-rod, comprising a" chambered piston, a hollow piston rod connecting the receiving-chambenof the crosshead and the chamber of the piston, a tube connecting the chamber of the piston and the discharge chamber of the cross-head, and annular packing rings carried by the cylindrical cross-head.

In testimony whereof I afiix my signature in presence of two witnesses.

THOMAS TURNBULL, J n.

Witnesses;

A. 0. WAY, v W.-G. D'oonrr'rnu. j w 

